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FKIE_CVE-2026-72349

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt() On links faster than ~34 Gbps, where byte rate may exceed 2^32-1 (~ 4.3 GBps), the comparison result becomes incorrect because the truncated value no longer reflects the actual estimator rate. Fix by changing the local variables to u64.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/444853cd438201007da5359821adcc2995655ab1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5da915fc159c6b4091669447588e520183969cca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77e9ba358d63fe2eb03c90d29ea85651d95cf2e6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/905a927b2e6fec7b174e9e5644d271047b61378f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3ba938f45cb00f6bf49d3aa3647df9b017f5f08
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bab305dd769d78074adca73505cc2509e1206bf2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e702f6dd5d21e331f55fd9168c0210542008546d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/xt_rateest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "77e9ba358d63fe2eb03c90d29ea85651d95cf2e6",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "a3ba938f45cb00f6bf49d3aa3647df9b017f5f08",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "bab305dd769d78074adca73505cc2509e1206bf2",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "5da915fc159c6b4091669447588e520183969cca",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "e702f6dd5d21e331f55fd9168c0210542008546d",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "905a927b2e6fec7b174e9e5644d271047b61378f",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            },
            {
              "lessThan": "444853cd438201007da5359821adcc2995655ab1",
              "status": "affected",
              "version": "1c0d32fde5bdf1184bc274f864c09799278a1114",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/xt_rateest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.10"
            },
            {
              "lessThan": "4.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()\n\nOn links faster than ~34 Gbps, where byte rate may exceed 2^32-1\n(~ 4.3 GBps), the comparison result becomes incorrect because the\ntruncated value no longer reflects the actual estimator rate.\n\nFix by changing the local variables to u64."
    }
  ],
  "id": "CVE-2026-72349",
  "lastModified": "2026-08-17T06:18:38.917",
  "metrics": {},
  "published": "2026-08-15T06:22:08.297",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/444853cd438201007da5359821adcc2995655ab1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5da915fc159c6b4091669447588e520183969cca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/77e9ba358d63fe2eb03c90d29ea85651d95cf2e6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/905a927b2e6fec7b174e9e5644d271047b61378f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3ba938f45cb00f6bf49d3aa3647df9b017f5f08"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bab305dd769d78074adca73505cc2509e1206bf2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e702f6dd5d21e331f55fd9168c0210542008546d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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